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Irrigation Engineering Practice Test: Pressure Conduits, Outlet Works through Dams and Rivers
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Avg score: 87% • Most missed: “Which head loss formula is also applicable to turbulent flow in pressure conduit…”
Outlet works through dams and rivers are openings that allow water to be withdrawn from reservoirs. These openings can be pipes or tunnels. Outlet works are used to regulate the release of water at a controlled rate, and to empty dams for safety reasons.  Here are some types of outlet works: Pressure conduits: A common type of outlet, these are made up of a pressure conduit or tunnel that leads from an intake structure to an emergency gate chamber. The flow is then carried through a free-standing steel pipe to a control structure. Sluices: These are outlet works through concrete gravity... Show more
Irrigation Engineering Practice Test: Pressure Conduits, Outlet Works through Dams and Rivers
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25 Questions

1. Which of the following conduits is used when large diameter pipes of smaller wall thickness are required?
2. Projecting collars are provided on sides of a rectangular tunnel of length L made through an earthen dam to increase the seepage path. Their projection length (X) and numbers (N) are decided so as to provide increased seepage path equal to 2NX where 2NX should generally be ______________________
3. Which of the following statement is incorrect?
4. Wrought iron pipes are heavier than cast iron pipes and cannot be easily fabricated.
5. The head loss in the flow of water through a penstock pipe of given length ____________
6. What is the value of head loss for the fully open gate and butterfly valves?
7. Wrought iron pipes are heavier than cast iron pipes and cannot be easily fabricated.
8. __________________ joint is often used for connecting cast iron pipes.
9. River intakes is usually situated on ____________________
10. __________________ joint is often used for connecting cast iron pipes.
11. A trash rack is not required at the entrance of a ____________________
12. Which head loss formula is also applicable to turbulent flow in pressure conduits?
13. Bar screens used to cover dam outlets to prevent entry of debris or ice into the sluiceway conduits are called ______________
14. The outlet provided in a dam body to release water for the downstream water demand is known as ______________________
15. Which of the following types of pressure conduits is preferably used for large heads?
16. A special flexible joint called simplex joint is generally used to join _______________
17. The flow through the penstocks and pressure conduits is generally ____________________
18. Which head loss formula is also applicable to turbulent flow in pressure conduits?
19. A 2 m diameter sluiceway at RL 300 m is provided through a concrete overflow dam section to release water to the downstream where tail water level is not more than 275 m. The discharge through this outlet when the water level in the reservoir is at FRL of 330 m is of the order of_________________
20. Which of the following pipes is used for carrying hot water in the interior of the building?
21. A trash rack is not required at the entrance of a ____________________
22. Bar screens used to cover dam outlets to prevent entry of debris or ice into the sluiceway conduits are called ______________
23. A 2 m diameter sluiceway at RL 300 m is provided through a concrete overflow dam section to release water to the downstream where tail water level is not more than 275 m. The discharge through this outlet when the water level in the reservoir is at FRL of 330 m is of the order of_________________
24. Which of the following statement is incorrect?
25. The head loss in the flow of water through a penstock pipe of given length ____________

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